Gigabeat S/i.MX31: Sort files in the /target tree into things that are SoC-generic (into /imx31) and player-specific (into /gigabeat-s, based upon current appearances). Move i2s clock init into the appropriate file. Housekeeping only-- no functional changes.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25547 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 67 insertions, 0 deletions

diff --git a/firmware/target/arm/imx31/gigabeat-s/wmcodec-gigabeat-s.c b/firmware/target/arm/imx31/gigabeat-s/wmcodec-gigabeat-s.c
new file mode 100644
index 0000000000..96324cc162
--- /dev/null
+++ b/firmware/target/arm/imx31/gigabeat-s/wmcodec-gigabeat-s.c
@@ -0,0 +1,67 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Gigabeat S specific code for the WM8978 codec
+ *
+ * Copyright (C) 2008 Michael Sevakis
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "config.h"
+#include "system.h"
+#include "kernel.h"
+#include "sound.h"
+#include "wmcodec.h"
+#include "i2s.h"
+#include "i2c-imx31.h"
+
+/* NOTE: Some port-specific bits will have to be moved away (node and GPIO
+ * writes) for cleanest implementation. */
+
+static struct i2c_node wm8978_i2c_node =
+{
+    .num  = I2C1_NUM,
+    .ifdr = I2C_IFDR_DIV192, /* 66MHz/.4MHz = 165, closest = 192 = 343750Hz */
+                             /* Just hard-code for now - scaling may require 
+                              * updating */
+    .addr = WMC_I2C_ADDR,
+};
+
+void audiohw_init(void)
+{
+    i2s_reset();
+
+    i2c_enable_node(&wm8978_i2c_node, true);
+
+    audiohw_preinit();
+
+    imx31_regset32(&GPIO3_DR, (1 << 21)); /* Turn on analogue LDO */
+}
+
+void audiohw_enable_headphone_jack(bool enable)
+{
+    /* Turn headphone jack output on or off. */
+    imx31_regmod32(&GPIO3_DR, enable ? (1 << 22) : 0, (1 << 22));
+}
+
+void wmcodec_write(int reg, int data)
+{
+    unsigned char d[2];
+    /* |aaaaaaad|dddddddd| */
+    d[0] = (reg << 1) | ((data & 0x100) >> 8);
+    d[1] = data;
+    i2c_write(&wm8978_i2c_node, d, 2);
+}